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cricket20 [7]
3 years ago
15

How many ways are there to distribute n graded homeworks to n students such that none of them gets their own homework back?

Mathematics
1 answer:
Yuri [45]3 years ago
8 0
Assume N students

Student 1 can get (n-1) papers
Student 2 can get (n-1) papers
Student 3 can get (n-1) papers
etc
Student N can get (n-1) papers

So for N students you can have N(n-1)
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dolphi86 [110]

Answer:

Step-by-step explanation:

y=-16x^2+200x+82

7 0
3 years ago
Please answer quickly, (1 question, 30 pts) thanks!
kaheart [24]

Step-by-step explanation:

once the level of medicine reaches a value, where 30% are 23mL (so, whatever is lost, is immediately replaced again), that is then the long run value for the amount of the drug in the patient's body.

so,

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1% = 30%/30 = 23/30 = 0.766666666...

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5 0
2 years ago
Subtract this please ​
cupoosta [38]

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B. 3x^2 - 13x + 7

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4 0
3 years ago
Read 2 more answers
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Ierofanga [76]

Answer:

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8 0
3 years ago
Quadrilateral ABCD has vertices A(1, -3) , B(2, 1), C(6, 3), and D(7, -1). Prove or disprove that the Quad ABCD is a rectangle.
zavuch27 [327]
If AC=BD, than Quad ABCD is a rectangle
AC
√(3+3)²+(6-1)²
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BD
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√4+25
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Quad ABCD is not a rectangle because √61 and √29 are not equal.
7 0
3 years ago
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